[Python] Python获取当前周指定星期的具体日期

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已于 2023-07-03 21:45:57 修改

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分类专栏： Python 文章标签： python

于 2022-10-20 22:15:58 首次发布

本文链接：https://blog.youkuaiyun.com/Hudas/article/details/127433567

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在最近的需求开发中，涉及到使用Python获取当前周指定星期的具体日期，特此记录总结下来，方便日后学习复盘

from datetime import datetime
from datetime import timedelta

def get_current_week_day(week_day="monday"):
    '''
     作用: 获取当前周指定星期的具体日期
     
     参数:
     week_day:星期(str格式)
     week_day的值是["monday", "tuesday", "wednesday", "thursday", "friday", "saturday", "sunday"]之一
     默认值为"monday"
       
     返回结果: 年月日格式的字符串类型数值
     
     示例: Monday = get_current_week_day("monday")
    '''
    today = datetime.now()
    # datetime模块中,星期一到星期天对应数字0到6
    week_days = dict(zip(("monday", "tuesday", "wednesday", "thursday", "friday", "saturday", "sunday"), range(7)))
    delta_hour = timedelta(days=1)  # 改变幅度为1天
    while today.weekday() != week_days.get(week_day):
        if today.weekday() > week_days.get(week_day):
            today -= delta_hour
        elif today.weekday() < week_days.get(week_day):
            today += delta_hour
        else:
            pass
    return today.strftime("%Y%m%d")

用于调用上述函数的具体日期为2022/10/20，该天是星期四

Monday = get_current_week_day("monday")       # "20221017"
Tuesday = get_current_week_day("tuesday")     # "20221018"
Wednesday = get_current_week_day("wednesday") # "20221019"
Thursday = get_current_week_day("thursday")   # "20221020"
Friday = get_current_week_day("friday")       # "20221021"
Saturday = get_current_week_day("saturday")   # "20221022"
Sunday = get_current_week_day("sunday")       # "20221023"